The wife of Orlando nightclub shooter Omar Mateen told the FBI in the hours after the 2016 massacre that she knew he was plotting "to do something bad" and that he revealed, "This is my target," according to a new court document reported by NBC News.

The 12-page statement that authorities say Noor Salman gave was released late last month as part of the case against her. Federal prosecutors initially said during a hearing early last year that Salman had known ahead of time about Mateen's plans and even helped him to scout Pulse, a popular gay nightclub, as the location for his rampage.

The statement, which the Orlando Sentinel first reported was written by an FBI agent and signed by Salman, includes more details about what Salman may have known prior to the June 12 attack. The mass shooting claimed 49 lives and at the time was the deadliest of its kind in modern U.S. history.

Salman, 31, faces a trial in March on charges of aiding and abetting and obstruction of justice. A federal judge on Wednesday denied her attorneys' request to move the trial to another location, saying they failed to prove the process wouldn't be fair in Florida following the intense media coverage.